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A123427 as a simple table

n a(n)
1 1
2 2
3 4
4 11
5 31
6 117
7 504
8 2772
9 18738
10 158931
11 1679288
12 22160769 

[1,2,4,11,31,117,504,2772,18738,158931,1679288,
 22160769]

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Last modified September 16 23:59 EDT 2024. Contains 375984 sequences. (Running on oeis4.)